Abd-B^iab9-x23-1 clones exhibit transformation of the male A9 tissue into leg tissue in the adult. Abd-B^iab9-x23-1/Abd-B^Uab-1 male flies lack internal genitalia, while female genitalia is abnormal. A common feature of these females is the absence of parovaria, and in about half of these, three or even four spermathecae instead of the normal two are observed. Supernumerary spermathecae are also detected in Abd-B^iab9-x23-1/Abd-B^Uab-1 clones. In a few females, duplications of part of the internal genitalia are observed.

Adult homozygous males have 6 normal abdominal segments. Males and females lack genitalia. Heterozygotes with Abd-B^iab9-tuh-3 exhibit genital defects to a moderate degree. No effect on penetrance of head defect phenotype, when in trans with Abd-B^iab9-tuh-3.

Male and female genitalia and analia are missing or abnormal in homozygotes. Parasegment 14 is partially transformed into parasegment 13, and there is a rudimentary setal belt in A9 in homozygous embryos.